[pahy-roh] /ˈpaɪ roʊ/
noun, plural pyros. Informal.
a combining form meaning “fire,” “heat,” “high temperature,” used in the formation of compound words:
pyrogen; pyrolusite; pyromancy.
Chemistry. a combining form used in the names of inorganic acids, indicating that the acid’s water content is intermediate between that of the corresponding ortho- (more water) and meta- (least water) acids (pyroantimonic, H 4 Sb 2 O 7 , pyroarsenic, H 4 As 2 O 7 , and pyrosulfuric, H 2 S 2 O 7 , acids). The combining form is also used in the names of the salts of these acids. If the acid ends in -ic, the corresponding salt ends in -ate (pyroboric acid, H 2 B 4 O 7 , and potassium pyrobate, K 2 B 4 O 7 , or pyrosulfuric, H 2 S 2 O 7 , and pyrosulfate, N 2 S 2 O 7); if the acid ends in -ous, the corresponding salt ends in -ite (pyrophosphorous acid, H 4 P 2 O 5 , potassium pyrophosphite, K 4 P 2 O 5).
denoting fire, heat, or high temperature: pyromania, pyrometer
caused or obtained by fire or heat: pyroelectricity
before vowels pyr-, word-forming element form meaning “fire,” from Greek pyro-, combining form of pyr (genitive pyros) “fire, funeral fire,” also symbolic of terrible things, rages, “rarely as an image of warmth and comfort” [Liddell & Scott]; see fire (n.). Pyriphlegethon, literally “fire-blazing,” was one of the rivers of Hell.
pyro- or pyr-
A pyromaniac, lover of fire (1977+)
[pahy-roh-bi-too-muh n, -tyoo-, -bich-oo-] /ˌpaɪ roʊ bɪˈtu mən, -ˈtyu-, -ˈbɪtʃ ʊ-/ noun 1. any of the dark, solid hydrocarbons including peat, coal, and bituminous shale.
[pahy-ruh-bawr-eyt, -it, -bohr-] /ˌpaɪ rəˈbɔr eɪt, -ɪt, -ˈboʊr-/ noun 1. 1 .
[pahy-ruh-sel-yuh-lohs] /ˌpaɪ rəˈsɛl yəˌloʊs/ noun 1. .
[pahy-ruh-kem-i-kuh l] /ˌpaɪ rəˈkɛm ɪ kəl/ adjective 1. pertaining to or producing change at high temperatures. /ˌpaɪrəʊˈkɛmɪkəl/ adjective 1. of, concerned with, being, producing, or resulting from chemical changes at high temperatures pyrochemical (pī’rō-kěm’ĭ-kəl) Relating to or designating chemical activity at elevated temperatures. Pyrochemical reactions are used, for example, to bring about the transmutation of […]